Intel / post

libfx adds durable, resumable agent turns

Source: x.com
Date: Published Oct 16, 2026

Harness durability in https://t.co/OL0LzGtvAw. The same 𝚌𝚛𝚎𝚊𝚝𝚎𝙵𝚡𝙰𝚐𝚎𝚗𝚝() is now *durable* on your laptop or in the cloud, via files, Postgres, or Vercel Workflows. Node.js or Bun. Agents need long-running compute. But they also need to tolerate restarts, redeploys, timeouts, crashes… Concretely, if a user sends a prompt and then throws their phone into a black hole, we ensure that turn runs to completion. If the process crashes mid-tool-call, it resumes from there. To this end, 𝚕𝚒𝚋𝚏𝚡 introduces a simple durability adapter API. On Vercel, it leverages all the infra we built for durable workflows and queues, giving you reliability with 1LOC. This is a critical aspect of production-grade agents (and something all @eve agents also get out of the box). Next, we'll show you how we bring the same durability to Pi, OpenCode, and even your own custom harnesses.

Oct 16, 2026 View on X

Why it matters

Long-running agents that survive restarts, redeploys and crashes need resumable turns. libfx adds a durability adapter API so a turn resumes from the interrupted tool call, backed by files, Postgres or Vercel Workflows.

Terms in this piece · Glossary

agent harness — The scaffolding around a model that turns it into a working agent — the loop, the tools it can call, and the rules for when to stop.

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